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dc.contributor.authorGonzález Gómez, Neudys
dc.contributor.authorCustal, Maria del Àngels
dc.contributor.authorTomara, Georgia N.
dc.contributor.authorPsarras, Georgios C.
dc.contributor.authorRiba Ruiz, Jordi-Roger
dc.contributor.authorArmelín Diggroc, Elaine Aparecida
dc.contributor.otherUniversitat Politècnica de Catalunya. Departament d'Enginyeria Elèctrica
dc.contributor.otherUniversitat Politècnica de Catalunya. Departament d'Enginyeria Química
dc.date.accessioned2017-10-25T08:09:04Z
dc.date.issued2017-12
dc.identifier.citationGonzález, N., Custal, M.A., Tomara, G., Psarras, G., Riba, J., Armelin, E. Dielectric response of vulcanized natural rubber containing BaTiO3 filler: the role of particle functionalization. "European polymer journal", Desembre 2017, vol. 97, p. 57-67.
dc.identifier.issn0014-3057
dc.identifier.urihttp://hdl.handle.net/2117/109110
dc.description.abstractNatural rubber (NR) nanocomposites have been prepared with hydroxylated barium titanate filler (BaTiO3-OH), employing emulsion polymerization followed by vulcanization process. The addition of barium titanate, a compound with high dielectric permittivity, was envisaged to increase the insulating properties of NR films, thereby reducing the electrical stress and the possibility of undesired arcing on their surfaces. The content of perovskite particles greatly affected both, the mechanical and the electrical properties, of the vulcanized films. It was observed that the optimum functionalized nanoparticle concentration is around 0.25–0.50 phr, range in which the elongation of break was maintained between 874–935% and the tensile strength was between 4.40–4.80 MPa; whereas the dielectric permittivity (¿') is slightly lower than the pristine NR or the NR compounded with high content of BaTiO3 nanoparticles. The dielectric study revealed the presence of two dielectric relaxation modes: (i) glass to rubber transition (a-relaxation) and (ii) interfacial polarization (IP), known as Maxwell-Wagner-Sillars (MWS) polarization. The comparison between small concentrations of non-functionalized and functionalized BaTiO3 inside NR polymeric films lead to the conclusion that the dielectric breakdown strength is high for non-functionalized fillers, supposedly due to less IP polarization phenomena.
dc.format.extent35 p.
dc.language.isoeng
dc.rightsAttribution-NonCommercial-NoDerivs 3.0 Spain
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/3.0/es/
dc.subjectÀrees temàtiques de la UPC::Enginyeria dels materials::Materials naturals::Gomes
dc.subjectÀrees temàtiques de la UPC::Enginyeria dels materials::Materials plàstics i polímers
dc.subject.lcshRubber--Electric properties
dc.subject.lcshPolymers--Electric properties
dc.subject.lcshDielectrics--Spectra
dc.subject.lcshBarium titanate
dc.subject.lcshVulcanization
dc.subject.otherbarium titanate
dc.subject.otherdielectric spectroscopy
dc.subject.othernatural rubber
dc.subject.otherpolymer composites
dc.subject.othersurface functionalization
dc.titleDielectric response of vulcanized natural rubber containing BaTiO3 filler: the role of particle functionalization
dc.typeArticle
dc.subject.lemacGomes i resines -- Propietats físiques
dc.subject.lemacPolímers -- Propietats elèctriques
dc.subject.lemacMaterials dielèctrics
dc.subject.lemacAnàlisi espectral
dc.subject.lemacVulcanització
dc.contributor.groupUniversitat Politècnica de Catalunya. MCIA - Motion Control and Industrial Applications Research Group
dc.contributor.groupUniversitat Politècnica de Catalunya. IMEM - Innovació, Modelització i Enginyeria en (BIO) Materials
dc.identifier.doi10.1016/j.eurpolymj.2017.10.001
dc.relation.publisherversionhttp://www.sciencedirect.com/science/article/pii/S0014305717309849?via%3Dihub
dc.rights.accessRestricted access - publisher's policy
drac.iddocument21579181
dc.description.versionPostprint (author's final draft)
dc.date.lift2021-10-25
upcommons.citation.authorGonzález, N., Custal, M.A., Tomara, G., Psarras, G., Riba, J., Armelin, E.
upcommons.citation.publishedtrue
upcommons.citation.publicationNameEuropean polymer journal
upcommons.citation.volume97
upcommons.citation.startingPage57
upcommons.citation.endingPage67


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Except where otherwise noted, content on this work is licensed under a Creative Commons license: Attribution-NonCommercial-NoDerivs 3.0 Spain